diff --git a/src/Api/Vault/Controllers/CiphersController.cs b/src/Api/Vault/Controllers/CiphersController.cs
index 59984683e5..c8ebb8c402 100644
--- a/src/Api/Vault/Controllers/CiphersController.cs
+++ b/src/Api/Vault/Controllers/CiphersController.cs
@@ -1097,7 +1097,7 @@ public class CiphersController : Controller
 
     [HttpDelete("{id}/attachment/{attachmentId}")]
     [HttpPost("{id}/attachment/{attachmentId}/delete")]
-    public async Task DeleteAttachment(Guid id, string attachmentId)
+    public async Task<DeleteAttachmentResponseData> DeleteAttachment(Guid id, string attachmentId)
     {
         var userId = _userService.GetProperUserId(User).Value;
         var cipher = await GetByIdAsync(id, userId);
@@ -1106,7 +1106,7 @@ public class CiphersController : Controller
             throw new NotFoundException();
         }
 
-        await _cipherService.DeleteAttachmentAsync(cipher, attachmentId, userId, false);
+        return await _cipherService.DeleteAttachmentAsync(cipher, attachmentId, userId, false);
     }
 
     [HttpDelete("{id}/attachment/{attachmentId}/admin")]
diff --git a/src/Core/Vault/Models/Data/DeleteAttachmentReponseData.cs b/src/Core/Vault/Models/Data/DeleteAttachmentReponseData.cs
new file mode 100644
index 0000000000..0a5e755572
--- /dev/null
+++ b/src/Core/Vault/Models/Data/DeleteAttachmentReponseData.cs
@@ -0,0 +1,13 @@
+using Bit.Core.Vault.Entities;
+
+namespace Bit.Core.Vault.Models.Data;
+
+public class DeleteAttachmentResponseData
+{
+    public Cipher Cipher { get; set; }
+
+    public DeleteAttachmentResponseData(Cipher cipher)
+    {
+        Cipher = cipher;
+    }
+}
diff --git a/src/Core/Vault/Services/ICipherService.cs b/src/Core/Vault/Services/ICipherService.cs
index b332fbb96f..17f55cb47d 100644
--- a/src/Core/Vault/Services/ICipherService.cs
+++ b/src/Core/Vault/Services/ICipherService.cs
@@ -17,7 +17,7 @@ public interface ICipherService
         string attachmentId, Guid organizationShareId);
     Task DeleteAsync(Cipher cipher, Guid deletingUserId, bool orgAdmin = false);
     Task DeleteManyAsync(IEnumerable<Guid> cipherIds, Guid deletingUserId, Guid? organizationId = null, bool orgAdmin = false);
-    Task DeleteAttachmentAsync(Cipher cipher, string attachmentId, Guid deletingUserId, bool orgAdmin = false);
+    Task<DeleteAttachmentResponseData> DeleteAttachmentAsync(Cipher cipher, string attachmentId, Guid deletingUserId, bool orgAdmin = false);
     Task PurgeAsync(Guid organizationId);
     Task MoveManyAsync(IEnumerable<Guid> cipherIds, Guid? destinationFolderId, Guid movingUserId);
     Task SaveFolderAsync(Folder folder);
diff --git a/src/Core/Vault/Services/Implementations/CipherService.cs b/src/Core/Vault/Services/Implementations/CipherService.cs
index ea4db01fd7..90c03df90b 100644
--- a/src/Core/Vault/Services/Implementations/CipherService.cs
+++ b/src/Core/Vault/Services/Implementations/CipherService.cs
@@ -210,6 +210,11 @@ public class CipherService : ICipherService
             AttachmentData = JsonSerializer.Serialize(data)
         });
         cipher.AddAttachment(attachmentId, data);
+
+        // Update the revision date when an attachment is added
+        cipher.RevisionDate = DateTime.UtcNow;
+        await _cipherRepository.ReplaceAsync((CipherDetails)cipher);
+
         await _pushService.PushSyncCipherUpdateAsync(cipher, null);
 
         return (attachmentId, uploadUrl);
@@ -259,6 +264,10 @@ public class CipherService : ICipherService
             throw;
         }
 
+        // Update the revision date when an attachment is added
+        cipher.RevisionDate = DateTime.UtcNow;
+        await _cipherRepository.ReplaceAsync((CipherDetails)cipher);
+
         // push
         await _pushService.PushSyncCipherUpdateAsync(cipher, null);
     }
@@ -441,7 +450,7 @@ public class CipherService : ICipherService
         await _pushService.PushSyncCiphersAsync(deletingUserId);
     }
 
-    public async Task DeleteAttachmentAsync(Cipher cipher, string attachmentId, Guid deletingUserId,
+    public async Task<DeleteAttachmentResponseData> DeleteAttachmentAsync(Cipher cipher, string attachmentId, Guid deletingUserId,
         bool orgAdmin = false)
     {
         if (!orgAdmin && !(await UserCanEditAsync(cipher, deletingUserId)))
@@ -454,7 +463,7 @@ public class CipherService : ICipherService
             throw new NotFoundException();
         }
 
-        await DeleteAttachmentAsync(cipher, cipher.GetAttachments()[attachmentId]);
+        return await DeleteAttachmentAsync(cipher, cipher.GetAttachments()[attachmentId]);
     }
 
     public async Task PurgeAsync(Guid organizationId)
@@ -834,11 +843,11 @@ public class CipherService : ICipherService
         }
     }
 
-    private async Task DeleteAttachmentAsync(Cipher cipher, CipherAttachment.MetaData attachmentData)
+    private async Task<DeleteAttachmentResponseData> DeleteAttachmentAsync(Cipher cipher, CipherAttachment.MetaData attachmentData)
     {
         if (attachmentData == null || string.IsNullOrWhiteSpace(attachmentData.AttachmentId))
         {
-            return;
+            return null;
         }
 
         await _cipherRepository.DeleteAttachmentAsync(cipher.Id, attachmentData.AttachmentId);
@@ -846,8 +855,14 @@ public class CipherService : ICipherService
         await _attachmentStorageService.DeleteAttachmentAsync(cipher.Id, attachmentData);
         await _eventService.LogCipherEventAsync(cipher, Bit.Core.Enums.EventType.Cipher_AttachmentDeleted);
 
+        // Update the revision date when an attachment is deleted
+        cipher.RevisionDate = DateTime.UtcNow;
+        await _cipherRepository.ReplaceAsync((CipherDetails)cipher);
+
         // push
         await _pushService.PushSyncCipherUpdateAsync(cipher, null);
+
+        return new DeleteAttachmentResponseData(cipher);
     }
 
     private async Task ValidateCipherEditForAttachmentAsync(Cipher cipher, Guid savingUserId, bool orgAdmin,